-1.62% is the change from 619 to 609
Calculation steps:
[( 609 - 619 ) ÷ 619] x 100 = -1.62%
Formula
Percentage change = [(609 - 619) / 619] x 100
Subtract the new number by the original number
609 - 619 = -10
-10 ÷ 619 = -0.01615508885298869
-0.01615508885298869 x 100 = -1.62%